ATI video problem

[Vincent Trouilliez]

On Wed, 2006-04-26 at 15:17 +0100, paul marwick wrote:
> The second problem seems to be specific to the Dapper beta. While it is 
> selecting the correct resolution, it seems that it is not selecting the 
> correct refresh rate. The screen looks as though it is running at much 
> too low a refresh rate

Had this problem too.
I fixed it by editing xorg.conf to explicitly specify the monitor's
horizontal and vertical frequency ranges, like this:

Section "Monitor"
        Identifier      "NEC M700"
        Option          "DPMS"
        HorizSync       31 - 69
        VertRefresh     55 - 120
EndSection

If you don't know what the frequencies are, look up in your monitor user
manual, or you can type "sudo ddcprobe" in a terminal.

HTH,


--
Vince